宽带短波信道模拟器中噪音数据生成算法的改进  

Enhanced Noise Signal Generating Algorithm in Wide-band HF Channel Simulation System

作　　者：谢晓刚[1] 陈瑾[2] 刘瑞军[3] 刘德良[2] 

机构地区：[1]解放军理工大学通信工程学院研究生2队,江苏南京210007 [2]解放军理工大学通信工程学院无线通信系,江苏南京210007 [3]海军航空工程学院,山东烟台264001

出　　处：《军事通信技术》2007年第4期100-103,共4页Journal of Military Communications Technology

摘　　要：信道模拟器在通信设备的开发中起着非常重要的作用。随着短波通信的宽带化,研制新的宽带短波信道模拟器也日益重要。文章针对宽带模拟器研制中前人在噪音信号计算中的不足之处,以大气噪音干扰信号为例,对其数学模型进行了分析,提出了一种新的基于查找表的噪音实现算法。采用该算法可以简化信道模拟器结构并有效降低其实现复杂度及操作复杂度,更重要的是该算法实现的噪音具有较好的随机特性,更加符合信道的实际情况。The channel simulation system plays a very important role in the development of communication systems. As the bandwidth of HF communication system increases, developing a new wide-band HF channel simulation system is needed. Based on the general analyses of a wideband High Frequency （HF） simulation system described in some articles in recent years, this paper pointed out some deficiencies in the algorithm of noise signal generating suggested in those papers. Then it analyzed the model of atmosphere noise as an example and suggested a new algorithm based on the looking-up table for generating the noise signal. By adopting this algorithm, the configuration and the realization of the simulation systems can be predigested, and the noise signals calculated by this algorithm have a better randomicity and act the way the real channel does.

关 键 词：宽带短波信道 信道模拟器 查找表 数字信号处理 

分 类 号：TN911.4[电子电信—通信与信息系统]